DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(Constant.operationLogGroup);        try {            consumer.setNamesrvAddr(Constant.rocketQueneAddr);            consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);            consumer.setMessageModel(MessageModel.BROADCASTING);            consumer.subscribe(Constant.operationLogTopic, Constant.operationLogTag);        } catch (MQClientException e) {            logger.error("consume operation log MQ error", e);        }        cometutil = Comet4jUtil.getInstance(CHANNEL);        consumer.registerMessageListener(new MessageListenerConcurrently() {            @Override            public ConsumeConcurrentlyStatus consumeMessage(List
      
        msgs, ConsumeConcurrentlyContext context) {                byte[] bytes = msgs.get(0).getBody();                try {                    cometutil.sendMesToAllConnsWithString(CHANNEL, new String(bytes, "UTF-8"));                } catch (UnsupportedEncodingException e) {                }                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;            }        });        try {            consumer.start();            logger.info("operationLogController's MQ consumer started.");        } catch (MQClientException e) {            logger.error("consume operation log MQ start error", e);        }